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please solve ASAP Exercise 2 (15 points) Two friends decide to securely communicate by using a simple transposition-based cipher. They agree on a passphrase above

please solve ASAP
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Exercise 2 (15 points) Two friends decide to securely communicate by using a simple transposition-based cipher. They agree on a passphrase above (decrypted by Cesar cipher) to deduce the key fixed to 9 ciphers. Encode the message below: there is no confidentiality without integrity

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